Carton.



S. G. LEITCH.

CARTON.

APPLICATION FILED SEPT. 22, 1913 1,121,737. Patented Dec. 22, 1914.

1i i 1W3 .iinid no CARTON.

Specification of Letters Patent.

To 4151 cu l/. 51 if may mime-urn:

lie it. known that l, SAMUEL G. LEI'ICH, a resident of Somerville. in the county of hiiddlesex and State of Massachusetts, have invented certain new and useful Improvements in Cartons, of which the following is a full. clear, and exact description.

The invention relates to cartons and more particularly to that type in Which strips of hexibic material are employed for securing tin of a folded and but blank or sheet together.

it is non common practice to make boxes or cartons of one or more sheets of paper u ch are folded and cut and to secure the or other suitable material. in practice, it has been found that when strip of cloth of a single thickness is ipped over the contiguous portions of the sheet. usually Where the corner of the box is fornicii, the strip, particularly when subected to unusual stresses, is torn 0 ripped the jointso that the box will become broken andi'iseless.

The present invention designs to provide an iniprmed carton in Which there is a provision for o. strip of material which, when '1. will be of verzil thickrce the joint Where the strips hence to rip or break away. in this manner, the joints between the sheets i no corner 0? the box will be so 'eini orced that no breaking away the joint.

invention consists in the novel he einafter forth and more perticulzirlv defined by claims at the conclusion hereof.

In the drmvings: Figure l is e. perspective '1 a carton embodying the invention. s a detail perspective showing the manner folding the connecting strip so it Will provide i'enniorcei out at the joint. ig. is a. section taken on line of Fig. 1.

A denotes the box formed of paper hoard. usually formed of a. single sheet of material creased or formed at a. to form the box corners and cut as at {6 to form the end flaps (L3, one on each side of the box. This type of bov. is usually folded for convenience in transportation and so that the sides will be parallel to one another.

A strip a of stout fabric having adhesive applied to one side thereof, is hipped over sheets together by a strip of Patented Dec. 22,1914.

w m c7. a September 522 1913. Serial no. 790,972.

the end fiws of the sheet forming the box to form a. joint between said flaps.

It has been common practice to employ a strip oi single thickness which was extended also partly over the end flaps and slitted sulliciently to permit the end flaps to be folded into position. Owing to the great stress at the corner or at the joint Where the slit in the connecting strip terminates, the strip when folded, frequently com 'mcnccs to rip so that the connecting strip would be ineffective to form the joint between the contiguous edges of the sheet.

iiccording to the present invention, the strip r) slittcd as indicated atb at each end, and the portions outside of the slits form tabs for securely connecting the end flaps to the reinforcing strip. The intermediate portions between the slits are folded inwardly as at b and then reverted as at I)" toform three thicknesses of material at the corners Where the strip makes the joint or connects the ends of the sheet. The intermediate portions which are folded inwardly are preferably Wider at their outer ends so that when they are folded the outer parts thereof will underlie the tabs 6-. The adhesive on the inner face of the inner thickness will cause that portion of the strip to adhere to the edges of the box and the outer ends will underlie tabs b". The intermediate thickness will adhere to the outer thiclcncss of material and in this manner the three thicknesses of material will be secured together to the box and form :1- Well reinforced joint and a connection between the edges of the sheet forming the box.

The invention thus exemplifies a box in which :2. reinforced joint or connection is provided which may be provided without materiel increase in cost of the box, because the reinforcement is formed from portions unnecessary on the flaps. Obviously, the three thicknesses of material at the joints, particularly at the corners Where the flaps fold inwardly, will most effectively overcome any breakage at this point where br akage frequently occurs in practice when a single connecting strip is used.

The invention is not to be understood as restricted to the details set forth, since these may be modified Within the scope of the appended claims Without departing from the spirit and scope of the invention.

Having thus described the invention, What form 'a reinforcement at 2. A; box-having e of flexible materiel lapped around one oi its edges and secored to two of its sides forming a oint portion of the strip reverted see spanning said jointto form. a reinforcement at the goint between the strip and the box.

3. A box having a strip oi flexibie material lapped around one of its edges and secured to two of its sides forming a joint and having end portions reverted inwardly toward each other and spanning said joint to provide plural thicknesses of the material at the ends oi the strip to reinforce the end portions of the. joint.

e. A box having a joint, and a strip of flexible materiel extending across the JOiIli) and secured to portions of the box adjacent the joint, said strip having tabs thereon, the intermediate portion of the strip between said tabs being folded, to form plural thickwe having a.

' nesses of material at the end portions of the joint between the strip and the bolt.

5. A box having flaps, and a'strip ofifie ible materialiapped around and securd to thefieps thereon on having tabs thereon secured to the end-flaps of the box, the 1151f termediate portion or the strip between said tabs being folded to form plural thicknesses of material at the end portions of/t-he joint between the strip and the box. f

6r A box having flaps, and a strip of flexible material, provided on one-side With an adhesive coating, lapped around and secured to the flaps thereon by means of said adhesive coating and having tabs thereon secured to the end flaps of the box, the intermediate portion of the strip between said tabs being folded to form plural thicknesses of material at the end-portions of the joint between the strip and the boX.-

7. A. box having flaps, and a strip of'fiex ible material lapped around and secured to said flaps and having tabs thereon formed by cutting; slits lengthwise of the strip secured to the end flaps of the box, a portion of the strip intermediate said tabs being folded inwardly and intermediate of its length to form plural thicknesses of material at the end-portions of the joint between the strip and the box.

' SAMUEL G. LEITCH.

Witnesses FRED GERLAQH, MILDRED STUMPF. 

